Fire-alarm.



J. H. OWEN. FIRE ALARM. APPLICATION FILED MAR-20, 19H.

1,135,916, Patented Apr.13,1915.

wwneom I THE NORRIS PETERS C0,, PHom-Llrna. WASHINGTON. D. c.

Mus in. ow or wne gmw onx.

' TIRE-emails; J

' i m sama m 91 ser am mac'se; ,j

State of "New York; 'have invented new anduseful 1 Improvements in Fire-Alarms, of

'whichthe following isaspecification. c I g n ral object ofthis invention s; tof V "effect the, closing ofan electric circuit'whlch includes 7 an audible signal; 1 such as a bell, 5 in the event of the occurring of fire in a room wherein theinvention is placed, And to theseends'l the inventionc'onsists "ofabase provided withmetallicarms adapted to be wired to anelectricpaudible alarm,

a circuit closing, member adapted 1130 icon- .vention. Fig.

vOther objects W1 the same. I

" As show awm lls the iiwent'idn," is c'omposed of'thebase ;5,*the metallic arms 2 '6- 6,the circuit closing plate -and the fusible SuppOrtingIJmeansB,

cond uctible material -suc 7 'as'afiber," rubber ceiling of a roomandfor ,t epurposeofreajj ceiving the securing screws 9, the Pbaseis pierced at suitableipoints. {Centrally car ried by the base is --a"St11dj,lQ, which is pro- 7 vide'd-with a suitable ihead 1 1,iandis sufii-d ciently long so as to extendfdowngbe'yond the arms 6, as shown in Fig.2. 1' This stud is provided for the purpose of.slidingly"car stantially yoke-shape and, insulated I from "basein anyu suitable manner, anaem a:

ranged in spaced; relation at either side "of: i ii The plate 7 may belformed of any sul ,ble metal such ascopper, brassor .thelike, and forthe purpose of illustration, the same I u i is shownin the form of a disk. This plate 1 is centrally pierced soasto be loosely mount- 1 I ed on the stud '10; and is .arr'angedatofdrop' tact with the arms "andmeans for holding the plate out of contactiand in spacedrela tion to "the arms, theY'said means 1 beings. formed of a substance'having' a relatively low melting'point." I I ll appearfand be better i understood fromthat embodiment of my in-' vention, of which the .following'is ia'sp'ecifi cation, reference being had to the -accom-'" panying drawingsformingfpart hereof, in

2xis'ga'cross: sectional View: of

The basef5 is' preferabl formed of anoneach other by meansof the,nOn conductingi I '---fbase 5. The arms may -be secured t0 'the i witnesses:-

the plate 7' contacting withthearms 'ta-" isin'use. vIn order-tohold the plate out of tively; low" melting point. r

specification efietters'ratenttfl le tned Ap 'j 370" I byforce of gravity" and 'span the arms 6,to a form a'contact therebetween when" the device f; It will be readily 1 seen, that] in the event. of a fire'o'ccurring the room in which the, ideviceis located; the heat wavesjwill ascend I a r V e, a and thus melt:-the wax--8', whereupon the Q Figure '1 is adiagrammatic view of myinplate willgravitationally drop andcontact" with the arms 6+6, thus closing the circuit 1 and operatingthealarm'signal;

It'is f obvious that th' se skillediiin the artclaim'. a What-1's clanned asnew' 1s ,85 o a mayflfvary the details of construction and. p a V arrangements of partsfwithout departing j from-thelspirit of my invention andtherefore I do not wish-to be limited to'such fea-i p I I tures except as maybe required by the; r or thelike,nand maybe-anyshape if'desired. Q 'L The baseis adaptedto'be ositioned on the" circuit closer comprising a support, me;

stall-ic arms mounted bn the support and :m-; sulated one from the other,,a stud'attachedxss o the support "anddisposed between the' I 1 arms and transverselythereof,; a plate; slid-Y ably mounted on. thestud between the arms 7, andkthe support and being*greate'r; in Y u u u 7 "ameter," than the space between the arms, rying the metallic plate The 'armsfi -(i 1 may bemadeof anyponductible"metal such as copperybrass, or the like, and aresubaT' infpresence ofr-two witnesses; v

H -JAMES .GRAHAM Wrrsc m 1 I EIJI ABETH FLYNN, f

[10oa and fusible material applied-to the'stud andlxg -.holding theg'plate spaced .from the arms In testilnonywh'ereof- I aflix my signature 5" a r 

